Keyboard



FIG. 1 is a perspective view of the keyboard showing my new design;

FIG. 2 is a front view of the keyboard;

FIG. 3 is a rear view of the keyboard;

FIG. 4 is a right view of the keyboard;

FIG. 5 is a left view of the keyboard;

FIG. 6 is a top view of the keyboard; and,

FIG. 7 is a bottom view of the keyboard.

Broken lines shown in the drawings represent unclaimed areas only and form no part of the claimed design. 

CLAIM The ornamental design for a keyboard, as shown and described. 